Did anyone else, fans of the TV series 'Castle' or otherwise, catch this episode, earlier this year? I just caught up on it, and it made me chuckle a bit as I watched the last 6-7 minutes... 
Apparently, Richard Castle is on a Trans-Atlantic plane when they discover that the Air Marshal aboard has been murdered. After much crime solving and several false twists (as is the general case with 'Castle'
), the episode comes to a climax when it is revealed that on-board the plane, there is a 'Art Deco Era Louis Callay Celestialis Watch' worth $13.3 Million. It is being transported strapped to a gentlemen's wrist so it is constantly in visual observation and so it can be transported as a personal effect rather than an item of value. Long story short, the individual in question was drugged earlier in the episode and while passed out, the watch was stolen and replaced with a fake? But how does Castle figure out that it is a fake? To Quote:
"This watch is a fake! The real Celestialis is self-winding. This watch has a knob."
I assume that the 'knob of which they speak is the crown on the watch, also used for setting time?
Looks like WUS still has a lot of teaching the general public about watch terminology to do!
This scene in the show is also made that much more amusing by the fact that Castle has show, on several other occasions over 7 years, almost encyclopedic knowledge about things that are important to him or relevant in some way, including a couple of other times he has mentioned watches, and his wife (in the show), Detective Kate Beckett wears a vintage Omega Speedmaster, which he knows too.
Apparently, Richard Castle is on a Trans-Atlantic plane when they discover that the Air Marshal aboard has been murdered. After much crime solving and several false twists (as is the general case with 'Castle'

"This watch is a fake! The real Celestialis is self-winding. This watch has a knob."
I assume that the 'knob of which they speak is the crown on the watch, also used for setting time?